| 摘要 |
Supported olefin polymerization catalyst compositions prepared by contacting a support comprising a solid compound which is one of pure aluminium oxide, a mixed aluminium oxide, an aluminium salt, a magnesium halide, or a C1-C8 alkoxy magnesium halide, in any order with at least a) an organometallic compound of the general formula (1): RlMXv-1, wherein each R is the same or different and is a C1-C10alkyl group; M is a metal of Group 1, 2, 12 or 13 of the Periodic Table; each X is the same or different and one of a halogen atom, a hydrogen atom, a hydroxyl radical or a C1-C8 hydrocarbyloxy group; l is 1, 2 or 3; v is the oxidation number of the metal M, b) a metallocene of the general formula (2): (CpY)mM'X'nZo, wherein each CpY is one of a mono- or polysubstituted, fused or non-fused, homo- or heterocylic cyclopentadienyl, indenyl, tetrahydroindenyl, fluorenyl, or octahydrofluorenyl ligand, which ligand is substituted at its cyclopentadienyl ring with at least one substituent Y which is one of a -OR', -SR', -NR'2, -C(H or R')=, or -PR'2 radical, each R' being one of a C1-C16 hydrocarbyl group, a tri-C1-C8 hydrocarbyl silyl group or a tri-C1-C8 hydrocarbyloxy silyl group; M' is a transition metal of Group 4 of the Periodic Table and bound to the ligand CpY at least in an 5 bonding mode, each X' is one of a hydrogen atom, a halogen atom, a C1-C8 hydrocarbyl group, a C1-C8 hydrocarbylheteroatom group or a triC1-C8 hydrocarbylsilyl group or two X' form a ring with each other; Z is a bridge atom or group between two CpY ligands or one CpY ligand and the transition metal M'; m is 1 or 2; o is 0 or 1; and n is 4-m if Z is a bridge between two CyP ligands or n is a 4-m-o if Z is a bridge between one CpY ligand and the transition metal M', and c) an aluminoxane of general formula (3).
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